Thermal-acoustic enclosure
a technology of enclosure and enclosure, which is applied in the field of enclosures for turbine engines, can solve the problems of increased excessive increased weight of engine enclosures, etc., and achieves the effect of increasing the fuel consumption of the vessel, increasing the sound attenuation or transmission loss, and increasing the weight of the enclosur
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[0017]Current enclosure designs used to package or house gas turbine engines for use in marine applications provide acoustic transmission loss requirements with heavy metal structures. One form of a wall of such current, prior art enclosures is shown generally at 10 in the diagrammatic, fragmentary sectional view of FIG. 1. Wall 10 comprises, in sequence from outside 12 of enclosure wall 10, a heavy metal plate 14, a sprayed-on thick rubber coating material 16, felt batting material 18 (typically including a thin film facing 19) to provide damping of acoustic energy, and a perforated metal face sheet 20 (including pores 22 therethrough) adjacent enclosure inside or enclosure hollow interior 24. Supporting such prior art structure is a large number of heavy metal stiffening beams (not shown). Such current design results in an extremely heavy structure for an enclosure in order to satisfy specified sound energy attenuation requirements.
[0018]Forms of the present invention eliminate he...
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